Printing press



spt. 1; 1925.

w. R. HoTcHKlss PRINTING PRESS 3 Sheets-Sheet l Wlenocliw Filed June 15. 1923 Sept. 1 1925.

W. R. HOTGHKISS PRINTING PRE-ss' Filed. June' 15'. 1933 's sheen-sheet 2 zg am,

sept. 1,1925.

W. R. HOTCHKISS PRINTING PRESS Filed June 15, 1925 3 Sheets-Sheet 3 Patented Sept. 1, 1925.

Wmnnrrr n'. nomnmss, oneri- PAUL, MINNESOTA.

RmNrINeS-rnfnsss Agp1ieatio1rv-il'l'earl Iii/:112115, 1923;'.V Seal No. 645,560.,

To all whom t mayconcem: p t

Be it known that I, YSKILLIJAM Rg. Hormon? Kiss, a citizen of the'United States, resid ing at St. l?aulin4 the.` county of Ramsey and: State of. Minnesota, have.y invented` new and useful Improvements: in APrinting Presses,` of' Which the following.r isl a1 speci ication. Y I V y The obj ect of this invention, isg'to provide an unusually high speedy and. efficient press particularly adapted.- for. check printing and other Work usually performed onx platen presses l v Referring to the accompanyinf drawings, which illustrate thevbest forni of'my device at present l-nown to. me, FigureY lvis-anend elevation of my improved: pr.ess.; F1ig. 2fis a side elevation of the same showingthe hed in the position forl setting up a plate or type form thereon, Fig. 3 is asection taken on the line 3-3- of Fig. 2 showingY the several cylinder supporting, parts insv lowered. or printing position; Fig.. 4 is an end View of the cylinder and ink-ing mechanism Figr is a central, transverse section throughthe cylinder; Fig. 6. is ahorizontalfseftiontaken on the line 6-6; of Fig. '3. and showing'a fragmentary portioni of the cylinder; Fig. 7 is a. section taken on the line' 7-7 of 2 showing the bed in operating position and elevated; Fig;l 8 is a side elevation-v of the cylinder with the ink plate. removed Fig. 9 is a section through the cylinder taken on the line 9 9 ofnFig. 7;, andV Figi lO'is a.. detail elevation of the inner face of the ink plate.A y

1n the accompanying, drawings: I. havel used the numeral: 11 to indicate a; pair of standards connected by transverse members 12 to form a supporting fran-ieforv the press.

A flange l13 extends around the outerlsur-k face ofeach ofthe standards 11i andu similar flanges 1d (Figs. 1 and 6) formyertrcal guides for slidesl in said standards..V The lslides 15 are free to moveyerti'cally within the limits of rectangular` openingsv 16 in the standards 11. Projecting laterally from each` ofthe slides'l is a pairy o f flangesl 127 which bear against the inner surfaces of the standards 11. Supported near its, ends upon the slides 15 isA alarge shaft 18'carrying a cylinder19. Theyshaft 11S rigidly Y seonredtov the slides.A 15-E by taper pins' 20, the; removal; ofi. said. pins' fromi the sha-ft being#l facilitatedi by nuts 211V threaded on the upper endsi of said; pinsl and.V arranged to; be yturned'L downward to; Withdraw'saidg pins from the shaft; a

Ther oylnder'19; as best shownfin Figure l ghas anaXial loorev 22V throughv which the shaft 18 passes.A Extending through the cylinder 191- frromzone VendA to the other are coredzout portions 23;' andV a compartment -211olosedf o nfits periphery hy.v an y ink plate 25. .Thel normally lower portion) of the cylinder 1 9 is flattened tofreceivea bed'f plate2 upon Whicligvthegusuaflf chase' 2.7i is carried. The type or electroty-pe plate 28 is mounted in the.- ,usuafl manner. in .the chase. f2.7,V showlm'the 2fE-.i`srigidly secured towthe bed plate 26 Whifh is held in place at one 'edge hy: an undercut, porton29 of the cylinder and; at the opposite. edgefvbyvV asuitahle screwl 3Q.

A series `off spring actuated-L rQds-gl extend radially through/the cylinder 129t and! normallfy project,V into; therhore; 22,. Wherev they engagev suitable recesses 312i in thefshafft 18.

The. rods 31 are con-nected impairsl at.. their outer endsbyjsuitable grips 3,3 While"v coiled springs 34e normally press said rods4 into, engagement with the shaft 184 in the. recesses 82. By means of the 'grips 33', therodsl 8.1

`may loe Withdrawn from the recesses. 32 and the cylinder 19'rotated upon the shaft 18to either theV operativeposition shown. Figs.

`4, 5 and 7 f orto.. the, inoperative position shown in Figs.V I and 2.

Vertical reciprocating movement is` imparted to the shavi't18 carrying thev cylinder 19 by ,aIV pair Vof langek pitmen. 35. pivotally joined at their upper' ends: to the. outer, ends ofthey shaft 18 and.V adapted to he actuated hy cranks onfth'e outerf extremities of a power shaft 37.. This latter shaft may be ydriyenloyy any suitable means, sueltas; by an electric motorjc'onnected tela1 gearSS on. the shafty 37. When the shaft 37 i'svrotated, the motion thusfi'mparte'dto, the cylinder 19 causes the plate 2801i they leed 2,6 to,v he reciprocat'ed so as to make impressions upon paper yplacedona, platen 3.9 supported' by tliejstandards: l';

Inl; applied to thety'pe 2S'hy a pairv of .Y

v connected in pairs by gears 45 adapted to rotate on the shaft 18. Meshing with each of the gears 45 is a vertical rack 46 sliding in a guide 47 on the inner face of each of the standards 11. The racks 46 are severally joined by links 48 and 49 and levers 50 with the slides 15, the levers 50 being tiltably mounted upon pins 51 on the inner said plate.

faces of the standards 11. By this system of linkage, the racks 46 are elevated to rotate the gears 45 in one direction when the slides 15 are moved downward while the racks 46 are moved downward to rotate the gears`45 in the reverse direction when the slides 15 are elevated. As the slides 15 reciprocate, the arms 41 carrying the composition rollers 40 are thus oscillated over the ink plate 25 and type. Opposite, eX-

treme positions of the parts of the printing mechanism are severally shown in Figs. 4 and 7.

A spring actuated counterbalance for reciprocating movement of the cylinder 19 is provided. This counterbalance consists of a pair of stout springs 52 supported upon brackets 53 on the standards 11 and levers 54 pivotally supported at one end upon a transverse rod 55 and joined to the slides 15 by links 56, the free ends of the levers 54 being supported upon the springs 52. The tension in the springs 52 is made adjustable by means of nuts 57 and compression rods 57iL so vthat the momentum of the reciprocating parts is opposed by the springs 52.

To properly distribute ink on the composition rollers 40, the ink plate 25 is given longitudinal reciprocating movement by the following described mechanism. The plate 25 (Figs. 5 and 8 to 10, inclusive) is movable in lonlgitudinal guide ways 58 in the cylinder 19, said plate being somewhat shorter than said guide ways. The plate 25 is retained within the guide ways by a longitudinal rod 59 which is `fastened at `its ends in ears 60 on the cylinder. The rod 59 passes freely through ears 61 on the plate 25 and through 'a suitable aperturein a yoke 62 which is bolted to the inner surface of Thus, the plate 25 is free to slide on the rod 61 in the guide ways 58. A small roller 63, mounted eccentrically upon a wheel 64, extends into the yoke 62.

VThe wheel 64 is secured to the .face of a ratchet wheel 65, said ratchet being mounted concentrically with the wheel 64 uponv a pivot pin 66 (Fig. 9) of a lever 67. One end of the latter lever is adapted to be actuated by a roller 68 mounted on the inner face of one of the sockets 42. rlhe opposite end of the lever 67 carries a pawl 69 which engages the ratchet 65. A spring 7 O secured at one end to the normally upper edge of the lever 67 and at its other end to the cylinder 19 maintains the lever 67 in its full line position shown in Figure 8, except when actuated by theroller 68. As the gear 45 oscillates the composition rollers 40, the

small roller 68 strikes a bearing plate 71 on the lever 67 and moves said lever to its dotted line position shown in Figure 8, at the end of the stroke the composition rollers being inthe position shown in Figure 7. As the roller 68 is carried back toward the position shown in Figure 4, the spring 70 acts to return the'lever 67 to the full line position shown in Figure 8. Upon each downward stroke of the lever 67, the pawl 69 turns the ratchet 65 together with the wheel 64 and roller 63, a part of a revolution to thereby move the plate 25 longitudinally. Thus, as the wheel 64 rotates, the plate 25 is given reciprocating movement, longitudinally lof the rollers 40. Y

Operation.

Type are set up in the chase 27 with the I several parts in the position shown in Figures 1 and 2. The rods 31 are now withdrawn from engagement with the shaft 18 by manipulating the grips 33, when the cylingder 19 is rotated a quarter of a turn to bring the bed 26 to horizontal position above the platen 39 (Figure 7). Power is now applied to the gears 38 so as to rotate the shaft 37. Through the cranks 36 and pitmen 35, the shaft 18 carrying the cylinder 19 is now reciprocated vertically so as te make impressions upon the platen 39. During this operation the bed 26 will always remain in parallel relation with the platen 39. While the bed reciprocates, the composition rollers 40y will be oscillated over the ink plate 25 and type by the gears 45 meshing with the racks 46, said racks being connected with the slides 15 by the links 48 and 49 and levers 50. The timing o' the mechanism is such that the rollers 40 will pass over the type when the cylinder 19 is elevated and said rollers will receive a fresh supply of ink from the plate 25- when the cylinder 19 is lowered to printing position.

Simultaneously with the operation of the rollers 40, the roller v68 will actuate the 'lever 67 to rotate the ratchet 65 and wheel be printed may `either be Yfed te the pla-ten* *39 by'hand or by any suitable power driven y feedingmechanism. *Ink may be `applied toV l -the plate" Q5 either Kbyhand or =byfanye well known* or suitableautematicv feed 1Amecha-4 with'l said p'lavtenyto allowl ac'eess''to :said bed.

msm.

vImportantfeatures of the present device are the arrangement by which an unusually short printing stroke is obtained and the unusually light weight of the reciprocating parts as compared with presses in common use. The present machine is thus adapted to work at a very high rate of speed. As is well known, with the old type of platen press a speed of about 2000 impressions per hour is about the maximum that has been attainable without sacrificing accuracy. On the other hand, with the present machine a speed of vfrom 5000 to 6000 impressions per hour is obtainable, while retaining a high degree of accuracy. By providing long slides l5 for guiding the vertical' movement of the cylinder 19, all possibility of lateral play and inaccuracy of making impressions is eliminated. The high speed and accuracy of the present device greatly reduces the cost of printing and renders the inachine peculiarly adapted for use in printing checks or other forms or coupons where a large number of copies are required.

Having described my invention what I claim as new and desire to protect by Letters Patent is l. In a printing press, a platen and bed arranged in parallel relation, said bed being adapted to carry type for printing on said platen, a revoluble cylinder supporting said bed on its periphery, inking mechanism on said cylinder, manually operable Vmeans for rotating said cylinder to render said bed accessible and means for imparting reciprocating movement to said cylinder whereby printing is effected.

2. In a printing press, a frame, a platen and bed normally arranged in parallel relation with each other, said bed being adapted to carry type for printing on said platen, a cylinder revolubly supported in said framev and carrying said bed on its periphery, an ink plate in the periphery of said cylinder, means for imparting reciprocating movement to said cylinder whereby printing is effected, means arranged to distribute ink from said plate to type on said bed, and means for releasing said-cylinder to permit revolving the same whereby said bed may be rotated outl of parallel relation with said platen.

3. In a printing press, a frame, a normally stationary platen disposed horizontally in said frame, a bed adapted to be superimposed on said platen and arranged to carry type for printing on said platen, a vertically reciprocable and tiltable support for said bed, means for imparting reciprocating -v meansc fori maintainingl said flied inl parallel :relation with vsaidiplatenl uring said-*recip- 1rocati'ng i movement, 1 and -me'ans lforl'tilting said support 'and bed eut of iparal'lelrelation 4. 'In' ai'rprinting press;y a`plateniafndvbed normally arranged face to face, said bed being adapted to carry type for printing on said platen, a substantially cylindricalsupport for said bed, a shaft extending axially through said cylindrical support in parallel relation with said platen and bed, means normally operative to rigidly secure said support on said shaft, means for imparting reciprocating movement to said shaft in a direction perpendicular to said platen, and manually operable means for rotating said support on said shaft to render said bed accessible.

5. In a printing press, a bed support formed with a plain surface adapted to receive a printers form for type, a frame, a platen mounted in said frame face toV face with said surface, reciprocable slides disposed in said frame adjacent to opposite ends of said support, means pivotally joining said support to saidslides, means normally operative to rigidly secure said support on said slides, inling mechanism carried by said support and means for imparting reciprocating movement to said slides and'support for printing on said platen.

' 6. In a printing press, a hollow bed support formed with a central bearing and a plain surface adapted to receive a printers form for type, a frame, reciprocablerslides disposed in said frame adjacent to opposite ends of said support, a shaft connecting said slides and extendingrthrough said bearing in said support, means normally operative to rigidly secure said support on said shaft, gears revoluble on said shaft near the ends of said support, an ink carrier mounted on said support, a roller adapted to distribute inl; from said carrier to type on said support, a pair of arms connecting the ends of said rollers with said gears, means for im parting reciprocating movement to said slides and means operatively connecting said slides with said gears whereby said gears are oscillated upon said shaft when said slides areactuated.

7. In a printing press, a hollow bed support formed'with a central bearing and i plain surface adapted to receive a printers form for type, a frame, reciprocable slides disposed in said frame adjacent toy opposite ends of said support, a shaft connecting said" slides and extending through said bearing in said support, means normally operative to rigidly secure said support on said shaft, an arcuate ink plate slidable longitudinally on said support, gears revoluble on said shaft adjacent to the ends of said support, a rollel adapted to distribute ink from said plate to type on said support, a pair of arms connecting the ends of said roller With said gears, means actuated by one of said arms for transmitting reciprocating movement to said ink plate, means for imparting reciprocating movement to said slides and means operatively connecting said slides With said gears whereby said gears are oscillated upon said shaft when said Slides are actuated. 10

In testimony Whe-reef, I have hereunto signed my name to this specification.

WILLIAM R. HOTCHKISS. 

